xstate@5.0.0-beta.19

Major Changes

• #4049 afc690046 Thanks @davidkpiano! - If context types are specified in the machine config, the context property will now be required:

  // ❌ TS error
  createMachine({
    types: {} as {
      context: { count: number };
    }
    // Missing context property
  });
  
  // ✅ OK
  createMachine({
    types: {} as {
      context: { count: number };
    },
    context: {
      count: 0
    }
  });

Minor Changes

• #4117 c7c3cb459 Thanks @davidkpiano! - Actor logic creators now have access to self:

  const promiseLogic = fromPromise(({ self }) => { ... });
  
  const observableLogic = fromObservable(({ self }) => { ... });
  
  const callbackLogic = fromCallback((sendBack, receive, { self }) => { ... });
  
  const transitionLogic = fromTransition((state, event, { self }) => { ... }, ...);